Compares the current Version object to a specified object and returns an indication of their relative values.
Syntax
Parameters
- version
Returns
A signed integer that indicates the relative values of the two objects, as shown in the following table.
Less than zero The current Version object is a version before version.
Zero The current Version object is the same version as version.
Greater than zero The current Version object is a version subsequent to version.
-or-
version is null.
Exceptions
Type Reason ArgumentException version is not a Version and is not a null reference
Remarks
The components of Version in decreasing order of importance are: major, minor, build, and revision. An unknown component is assumed to be older than any known component.
For example:
Version 1.1 is older than version 1.1.0
Version 1.1 is older than version 1.1.1
Version 1.1 is older than version 1.1.2.3
Version 1.1.2 is older than version 1.1.2.4
Version 1.2.5 is newer than version 1.2.3.4
Example
C# Example
using System;
class VersionTest {
static string Test ( Version v1, Version v2 ) {
int i = v1.CompareTo(v2);
if ( i < 0 )
return "older than";
else if ( i == 0 )
return "the same as";
else
return "newer than";
}
public static void Main() {
Version vers1 = new Version( "6.1.2.4" );
Version vers2 = new Version( 6, 1 );
Version vers3 = new Version( 6, 1, 3 );
Console.Write("Version {0} is {1} ",
vers1, Test(vers1, vers2));
Console.WriteLine("version {0}", vers2);
Console.Write("Version {0} is {1} ",
vers1, Test(vers1, vers3));
Console.WriteLine("version {0}", vers3);
Console.Write("Version {0} is {1} ",
vers3, Test(vers3, vers3));
Console.WriteLine("version {0}", vers3);
Console.Write("Version {0} is {1} ",
vers2, Test(vers2, vers1));
Console.WriteLine("version {0}", vers1);
}
}
The output is
Version 6.1.2.4 is newer than version 6.1Version 6.1.2.4 is older than version 6.1.3
Version 6.1.3 is the same as version 6.1.3
Version 6.1 is older than version 6.1.2.4
Requirements
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0, 4.0.0.0